Unrated severityNVD Advisory· Published Oct 23, 2007· Updated Jun 16, 2026
CVE-2007-5639
CVE-2007-5639
Description
The Nortel UNIStim IP Softphone 2050, IP Phone 1140E, and other Nortel IP Phone, Mobile Voice Client, and WLAN Handsets products allow remote attackers to cause a denial of service (device hang) via a flood of Mute and UnMute messages that have a spoofed source IP address for the Signaling Server.
Affected products
4cpe:2.3:a:nortel:ip_softphone_2050:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:nortel:ip_softphone_2050:*:*:*:*:*:*:*:*
- (no CPE)
- cpe:2.3:a:nortel:mobile_voice_client_2050:*:*:*:*:*:*:*:*
Patches
Vulnerability mechanics
References
6- support.nortel.com/go/main.jspnvdPatch
- www.securityfocus.com/bid/26122nvdPatch
- www.csnc.ch/static/advisory/csnc/nortel_IP_phone_flooding_denial_of_service_v1.0.txtnvdExploit
- securityreason.com/securityalert/3273nvd
- www.securityfocus.com/archive/1/482480/100/0/threadednvd
- exchange.xforce.ibmcloud.com/vulnerabilities/37253nvd
News mentions
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